caa a22 4500 445382074 CHVBK 20180317143020.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-0941-3 doi (NATIONALLICENCE)springer-10.1007/s10948-010-0941-3 EuFe2As2: Magnetic Structure and Local Charge Distribution Anisotropies as Seen by Resonant X-ray Scattering [Elektronische Daten] [J. Herrero-Martín, C. Mazzoli, V. Scagnoli, L. Paolasini, H. Walker, Y. Xiao, T. Brueckel, R. Mittal, N. Kumar, S. Dhar, A. Thamizhavel, Y. Su] Non-resonant and element specific magnetic X-ray scattering has been used to determine the orientation of Eu and Fe magnetic moments in EuFe2As2 iron pnictide. Experiments have been carried out on single crystal samples at the ESRF. Resonant measurements on magnetic reflections at the Eu L3 absorption edge indicate that the orientation of the Eu moments in the antiferromagnetic phase (T<T N=19K) lie parallel to the crystallographic a-axis. In addition, non-resonant magnetic X-ray measurements indicate that the Fe moments are aligned along the same direction in the spin density-wave ordered phase (T<T S=190K). The temperature dependence of the integrated intensities suggests that the Fe magnetic sublattice is barely affected by the onset of Eu ordering at T N. The observation of non-zero resonant intensity on nuclear-forbidden reflections with wavevector corresponding to the Fe magnetic propagation vector at both the Eu L3 and As K absorption edges may be interpreted as the result of the polarization of the Eu 5d and As 4p electronic bands via hybridization with the Fe 3d states. Springer Science+Business Media, LLC, 2010 Fe pnictides nationallicence Magnetism nationallicence Resonant X-ray scattering nationallicence Herrero-Martín J. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut Mazzoli C. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut Scagnoli V. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut Paolasini L. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut Walker H. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut Xiao Y. Institut fuer Festkoerperforschung, Forschungszentrum Juelich, 52425, Juelich, Germany aut Brueckel T. Institut fuer Festkoerperforschung, Forschungszentrum Juelich, 52425, Juelich, Germany aut Mittal R. Juelich Centre for Neutron Science, IFF, Forschungszentrum Juelich, 85747, Garching, Germany aut Kumar N. Department of Condensed Matter Physics and Material Sciences, Tata Institute of Fundamental Research, 400 005, Mumbai, India aut Dhar S. Department of Condensed Matter Physics and Material Sciences, Tata Institute of Fundamental Research, 400 005, Mumbai, India aut Thamizhavel A. Department of Condensed Matter Physics and Material Sciences, Tata Institute of Fundamental Research, 400 005, Mumbai, India aut Su Y. Juelich Centre for Neutron Science, IFF, Forschungszentrum Juelich, 85747, Garching, Germany aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 705-709 1557-1939 24:1-2<705 2011 24 10948 https://doi.org/10.1007/s10948-010-0941-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-0941-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Herrero-Martín J. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut NATIONALLICENCE 700 1- Mazzoli C. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut NATIONALLICENCE 700 1- Scagnoli V. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut NATIONALLICENCE 700 1- Paolasini L. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut NATIONALLICENCE 700 1- Walker H. European Synchrotron Radiation Facility (ESRF), 38043, Grenoble Cedex 9, France aut NATIONALLICENCE 700 1- Xiao Y. Institut fuer Festkoerperforschung, Forschungszentrum Juelich, 52425, Juelich, Germany aut NATIONALLICENCE 700 1- Brueckel T. Institut fuer Festkoerperforschung, Forschungszentrum Juelich, 52425, Juelich, Germany aut NATIONALLICENCE 700 1- Mittal R. Juelich Centre for Neutron Science, IFF, Forschungszentrum Juelich, 85747, Garching, Germany aut NATIONALLICENCE 700 1- Kumar N. Department of Condensed Matter Physics and Material Sciences, Tata Institute of Fundamental Research, 400 005, Mumbai, India aut NATIONALLICENCE 700 1- Dhar S. Department of Condensed Matter Physics and Material Sciences, Tata Institute of Fundamental Research, 400 005, Mumbai, India aut NATIONALLICENCE 700 1- Thamizhavel A. Department of Condensed Matter Physics and Material Sciences, Tata Institute of Fundamental Research, 400 005, Mumbai, India aut NATIONALLICENCE 700 1- Su Y. Juelich Centre for Neutron Science, IFF, Forschungszentrum Juelich, 85747, Garching, Germany aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 705-709 1557-1939 24:1-2<705 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer